The Weed Flora of Iowa |
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Page 3
... leaves split ... Gramineae . Stems solid ; sheaths of leaves not split . Cyperaceae . 2. Flowers not inclosed by chaff - like scales..Juncaceae . 1. Plants not grasslike ; flowers with a perianth of 6 pieces ; stamens 6 .. ..Liliaceae ...
... leaves split ... Gramineae . Stems solid ; sheaths of leaves not split . Cyperaceae . 2. Flowers not inclosed by chaff - like scales..Juncaceae . 1. Plants not grasslike ; flowers with a perianth of 6 pieces ; stamens 6 .. ..Liliaceae ...
Page 4
... Leaves simple . With punctate dots ; stamens numer- .Hypericaceae . ous .... Leaves not with punctate dots ; sta- mens 6 ......... Leaves compound , pinnately 3 - foliate . ..... Cruciferae . Anacardiaceae . Leaflets 3 , obcordate ...
... Leaves simple . With punctate dots ; stamens numer- .Hypericaceae . ous .... Leaves not with punctate dots ; sta- mens 6 ......... Leaves compound , pinnately 3 - foliate . ..... Cruciferae . Anacardiaceae . Leaflets 3 , obcordate ...
Page 8
... leaves elongated , 14-3 / 4in . wide , acute ; ligule ciliate , and on the back where leaf - blade joins the sheath there is more or less pubescence ; panicle open , 6-12 in . long , the whorled branches naked below , the 3-5 - flowered ...
... leaves elongated , 14-3 / 4in . wide , acute ; ligule ciliate , and on the back where leaf - blade joins the sheath there is more or less pubescence ; panicle open , 6-12 in . long , the whorled branches naked below , the 3-5 - flowered ...
Page 14
... leaves and diffuse terminal and lateral panicles ; sheaths smooth , lax , somewhat flattened ; ligule ciliate ; leaf - blade 6-12 or 24 in . long , 2-10 lines wide , acute , scabrous on the margins and sometimes also on the prominent ...
... leaves and diffuse terminal and lateral panicles ; sheaths smooth , lax , somewhat flattened ; ligule ciliate ; leaf - blade 6-12 or 24 in . long , 2-10 lines wide , acute , scabrous on the margins and sometimes also on the prominent ...
Page 17
... leaves broad and flat , 6 in . - 1 ft . or more long ; smooth or roughened , margin roughened ; spikelets densely and ir- regularly crowded in several rows along one side of the spikelike branches of the panicle , 12 lines long , outer ...
... leaves broad and flat , 6 in . - 1 ft . or more long ; smooth or roughened , margin roughened ; spikelets densely and ir- regularly crowded in several rows along one side of the spikelike branches of the panicle , 12 lines long , outer ...
Other editions - View all
The Weed Flora of Iowa Jules Cool Cunningham,L H 1862-1931 Pammel,Harriette Susan Kellogg No preview available - 2015 |
Common terms and phrases
abundant achene aleurone alfalfa annual apex arvensis bindweed bracts brown brownish Bull calyx Canada thistle canadensis caryopsis Cirsium arvense Clark and Fletcher Clinton Fig clover seed color common corn corolla cotyledons crop cultivation Curled Dock dandelion Decatur Description.-A Distribution Distribution.-Common dodder Drawing by Charlotte elongated embryo empty glumes endosperm epidermal cells epidermis Europe exterminated Extermination.-This FAMILY fields Figure flowering glume foxtail fruit germination glume grain hairs Hillman involucre Iowa King L. H. Pammel lanceolate layer leaf leaves length meadows mustard noxious weeds nucellus oblong outer ovate palisade cells pappus parenchyma parenchyma cells pastures perennial pericarp Photographed by Colburn pistil plantain plants plowing Polygonum protein pubescent quack grass ragweed roadsides roots Rumex Russian thistle scar Shepherd's Purse Smartweed smooth soil species spikelet Spurge stamens stem surface testa thick-walled trichomes U. S. Dept walls waste places weed seeds Wild Winton yellow
Popular passages
Page 802 - ... official duties, payable in like manner as the salaries of other county officers. Section 1-c. The Board shall furnish such weed commissioner an office at the county seat, and all stationery, blanks and supplies necessary in the performance of his official duties. That Section Two (2) of said chapter be amended by changing the period at the end of said section to a comma, and adding immediately thereafter the following: And shoo-fly (Hibiscus Trionum), and wild carrot (Daucus Carota). That all...
Page 809 - ... sold, offered or exposed for sale within this State, shall have affixed thereto, in a conspicuous place on the outside thereof, a legible and...
Page 773 - VEGETABLE MATERIA MEDICA of the United States ; or Medical Botany : containing a Botanical, General, and Medical History of Medicinal Plants, indigenous to the United States ; illustrated by coloured Engravings, made after original Drawings from Nature, done by the Author.
Page 812 - This shall not, however, exempt the seller from the restrictions of section ten (10) of this act. Third. Seed that is held in storage for the purpose of being recleaned, and which has not been offered, exposed or held in possession of or for sale for the purpose of seeding. Fourth. Seed marked "not absolutely clean," and held or sold for export outside the state only.
Page 809 - ... or material sampled, the name of the party from whose stock the sample was drawn, and the time and place of...
Page 799 - This act being deemed of immediate importance shall take effect and be in force from and after its publication in the Register and Leader and the Des Moines Capital, newspapers published in Des Moines, Iowa.
Page 704 - Why weeds are so pertinacious and aggressive is too large and loose a question; for any herb whatever when successfully aggressive becomes a weed ; and the reasons of predominance may be almost as diverse as the weeds themselves. But we may inquire whether weeds have any common characteristic which may give them advantage, and why the greater part of the weeds of the United States, and probably of similar temperate countries, should be foreigners. As to the second question, this is strikingly the...
Page 14 - ... second and third glumes, the latter having sometimes a hyaline palea in its axil; floral glume elliptical, subacute, smooth and shining, a little shorter than the larger outer glumes ; anthers saffron yellow.
Page 18 - It is not generally recognized, but it is probably true, that more money is spent in the extermination of foxtails than of any other class of weeds we have in the state of Iowa, yet they are all easily destroyed. One of the best and most effective methods of destroying the foxtail is by plowing the small grain field as soon as the grain is removed. If this is not done a large amount of seed is produced. After this plowing in the fall the field should be disked and harrowed in the spring and then...
Page 811 - Italian rye grass (Lolium italicum) is labeled or sold under name of orchard grass (Dactylis glomcrata) seed. Second. When Canadian blue grass (Poa compressa) seed, red top (Agrostis alba) seed, or any other seed not blue grass seed, is sold under the name of Kentucky blue grass or blue grass (Poa pratensis) seed. Third. When yellow trefoil (Medicago lupulina...